**Assertion (A):** A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations. **Reason (R):** Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen. In the light of the above statements,

Both (A) and (R) are true and (R) is the correct explanation of (A)

The figure given below shows a small part of the human lung where the exchange of gases takes place. Select the option which represents the labeled part (A, B, C, or D) correctly identified along with its function. | Label | Description | |-------|-------------| | A | | | B | | | C | | | D | | i. Identify the labeled part A and its function. ii. Identify the labeled part B and its function. iii. Identify the labeled part C and its function. iv. Identify the labeled part D and its function.

A : alveolar cavity - main site of exchange of respiratory gases

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NEET Human Respiratory System Questions with Answers and Solutions

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NEET Human Respiratory System practice

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The partial pressures (in mm Hg) of oxygen (O<sub>2</sub>) and carbon dioxide (CO<sub>2</sub>) at alveoli (the site of diffusion) are :

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NEET Human Respiratory System practice

What visitors can use on this page

NEET Human Respiratory System practice FAQ

Prepare together, not alone

NEET Human Respiratory System practice

What visitors can use on this page

NEET Human Respiratory System practice FAQ